On Tue, Sep 04, 2018 at 05:44:07PM +0200, Jan Kiszka wrote:
> On 2018-09-03 16:09, [ext] Andreas J. Reichel wrote:
> > From: Andreas Reichel <[email protected]>
> >
> > Get the boot device out of the loaded image's handle and add a
> > function to compare a device path with the boot device's one.
> >
> > status);
> > }
> > + tmp = DevicePathToStr(DevicePathFromHandle(loaded_image->DeviceHandle));
>
> For my understanding: What is actually cut off there, ie. who does that path
> look like so that we only to cut off the last element, and there is not
> filesystem directory element remaining in it?
>
The DevicePath is pointing to the device, not to the file. That was my
argumentation all along regarding dirname/RemoveLastNodeFromDevicePath.
Since it is not just a directory.
Please read below.
> > +BOOLEAN IsOnBootDevice(EFI_DEVICE_PATH *dp)
> > +{
> > + extern CHAR16 *boot_device_path;
> > + CHAR16 *device_path, *tmp;
> > + BOOLEAN result = FALSE;
> > +
> > + tmp = DevicePathToStr(dp);
> > + device_path = dirname(tmp);
> > + mfree(tmp);
> > +
> > + if (StrCmp(device_path, boot_device_path) == 0) {
> > + result = TRUE;
> > + }
> > + mfree(device_path);
> > +
> > + return result;
> > +}
> > +
> > uint32_t calc_crc32(void *data, int32_t size)
> > {
> > uint32_t crc;
> >
>
> Looks good, /me just needs to understand the path structure, and maybe that
> should then also be documented in the code.
>
Agreed. We have something like
controller/bus/device/partition
in all cases.
Like
PciRoot(0)/Pci(0x1,0x1)/Ata(Primary,Master)/HD(Part2,Sig870E7D1B-3D9F-4E49-98BA-7283AB6AA632)
which gets cut to
PciRoot(0)/Pci(0x1,0x1)/Ata(Primary,Master)
I will add that to the documentation.
Andreas
> Jan
--
Andreas Reichel
Dipl.-Phys. (Univ.)
Software Consultant
[email protected], +49-174-3180074
TNG Technology Consulting GmbH, Betastr. 13a, 85774 Unterfoehring
Geschaeftsfuehrer: Henrik Klagges, Dr. Robert Dahlke, Gerhard Mueller
Sitz: Unterfoehring * Amtsgericht Muenchen * HRB 135082
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